Hundreds of buffalo are under quarantine after an illegal poison was used to kill prairie dogs

BISMARCK, N.D. (AP) – Hundreds of buffalo are under quarantine in North Dakota and South Dakota after an illegal poison was used to kill prairie dogs.

An Environmental Protection Agency investigation earlier found 40,000 pounds of Rozol poison had been distributed across 5,400 acres on the former Cannonball Ranch near the Standing Rock Sioux Reservation and the Wilder Ranch which straddles both states to the south.